<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.hello"
    android:versionCode="1"
    android:versionName="1.0" >

<uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="17" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >


    <activity
          android:name="hello"
          android:label="@string/app_name">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>
</application>

</manifest>

android:name="hello"

android:name="com.example.hello.MainActivity"

android:name="com.example.hello.hello"

<activity
          android:name=".MyFirstActivity"